Update README.md with correct copyright year (2013).

Author: David Kaiser

README.md

@@ -34,7 +34,7 @@ Find a bug or want to request a new feature?  Please let us know by submitting a
 Anyone and everyone is welcome to contribute. 
 
 ## Licensing
-Copyright 2012 Esri
+Copyright 2013 Esri
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.